Adding and listing machine



Nov. 4, 1941. L. P. CROSMAN ADDING AND LISTING MACHINE Filed Dec. 20, 1938 5 Sheets-Sheet 1 INVENTOR loru q Crosman Nov. 4, 1941. L. P. CROSMAN ADDING AND LISTING MACHINE 5 Sheets-Sheet 2 Filed Dec. 20, 1938 INVENTOR LON 79 rosrpan M ATTORNEY Nov. 4, 1941. L. P. CROSMAN ADDING AND LISTING MACHINE Filed Dec. 20, 1938 I 5 Shets-Sheet 3 Luring PI? JfiJzTZ/ INVENTOR O S m 8 (I Y L/b cr'roRNzY Nov. 4, 1941. L. P. CROSMAN ADDING AND LISTING MACHINE Filed Dec. 20, 1938 5 Sheets-Sheet 4 INVENTOR Iomng li fosmav-p W ATTORNEY Nov. 4, 1941.

L. P. CRO SMAN ADDING AND LISTING MACHINE Filed DeG. 20, 1938 5 Sheets-Sheet 5 j INVENTOR 1:01 i rz 9 Ag 25 rpan MATTOIRNEY Patented Nov. 4, 1941 ADDING AND LISTING MACHINE Loring Pickering Crosman, Maplewood, N. J., assignor to Monroe Calculating Machine Company, Orange, N. J., a corporation of Delaware Application December 20, 1938, Serial No. 246,816

3 Claims.

The invention has relation to listing machines and more particularly to means for total taking from the accumulators thereof.

In its broader aspects the invention provides means whereby the printing of the total will be prevented, unless the numeral wheels of the totalizers have been properly set back to zero position. Also it provides for elimination of fine adjustments of the assembled parts which has heretofore been necessary in order to prevent erroneous operation.

Another considerable advantage of the invention lies in its use in connection with an accumulator having tens transfer mechanism of the crawl type, described in U. S. Patent No. 1,828,180, issued to Clyde Gardner on October 20, 1931. In totalizing such crawl carry accumulators it has been customary to take the total from the accumulator wheels successively, from right to left of the machine, the successive timing being governed by a member operating upon the mechanisms from right to left at time intervals, as shown in U. S. Patent No. 1,867,002 issued to Clyde Gardner on July 12, 1932. The present invention shows means whereby the operation may proceed from right to left of the machine as rapidly as the wheels are brought to zero, thus speeding up the action.

The invention is shown as applied to a motor operated listing machine similar to that disclosed in applicants U. S. Patent No. 1,932,013, issued October 24, 1933.

In the accompanying drawings, illustrating the invention,

Fig. l is a section taken through the keyboard, the registering and printing mechanism of a list ing machine built in accordance with the invention.

Fig. 2 is an enlarged sectional view showing the accumulators and associated parts of Fig. 1 in position assumed during the taking of a total.

Fig. 3 is an exploded perspective view of a numeral wheel unit of the crawl carry accumulators.

Fig. 4 is a right side elevation of the total key, the power connections and associated parts.

Fig. 5 is a detail right side elevation of parts shown in Fig. 4 in position assumed during the total taking operation.

Fig. 6 is a detail right side elevation of the parts controlling the extreme right hand tripping fingers.

Fig. 7 is a partial right side elevation of the total key and associated parts of the invention as applied in a modified form.

Fig. 8 is a right side elevation of other assemblies of the modified form of the invention.

The registering segments of the machine are carried upon three-arm actuator levers 6I0 (Fig. 1), loosely mounted upon a shaft 608 and having stop bars 6l5 each adapted to cooperate with the stems of a bank of digit keys to limit the registering movement imparted to an accumulator 413. Type bars BII are also connected with the levers M0, the latter thus serving to bring appropriate type to the printing line. Depression of a digit key will also remove the column latch 2I4 from the path of movement of its related bar 6I5, these latches normally preventing movement of the stop bar and lever 6| 0 in any column in which no key is depressed.

Levers 6I0 are normally restrained by a spring tensioned rocker frame 6I6, mounted on shaft 608 and carrying a series of latches BII normally engaged by studs 56!! of the lever BIO. Movement of frame 6| 6 is governed in known manner by a cam 3I8 (Fig. 4), secured upon rock shaft 30I, the latter having connection through arm 3I6, link I08, driven clutch plate I05, and clutch pawl I 03 with the driving member I04 of a clutch operatively connected with an electric motor. The control whereby this clutch is engaged in effecting the registration of items set up on the keyboard does not concern the present invention.

Each numeral wheel unit of a crawl carry accumulator, as illustrated in Fig. 3, consists of a pinion 412 adapted to be brought into mesh with the segment of one of the arms 610, this pinion being coupled by engagement of members I! I, 4' with a floating gear 410. Floating gear 410 engages the internal gear teeth of numeral wheel "3 and is mounted upon an eccentric 430, fast upon a sleeve extending from the adjacent right hand or lower order numeral wheel. Movements imparted to pinion 412 are transmitted to numeral wheel 413 by rotary movement of floating gear 410, and at the same time rotation of cam 430 will carry the next higher order floating gear 010 in an orbit within the teeth of its numeral wheel gear 413, resulting in a movement of this higher order numeral wheel of one-tenth the extent of movement of the lower order wheel.

All of the above described mechanisms are of known construction.

Totals are taken according to the well known method, in which one of the accumulators is engaged with its segments, the column latches and segment restraining latches are released, and the segments allowed to rotate the wheels individually until index shoulders on the wheels engage zero stops. Thus all of the numeral wheels of the accumulators are brought to zero, and the type bars adjusted to bring to the printing line type representing the amount cleared from the numeral wheels.

To'rAL.Successivc zcroz'zing In Figs. 1 to 6 of the drawings. inclusive, the invention is shown as applied to a totalizing mechanism wherein the numeral wheels of any accumulator which is meshed with the actuator segments are rotated subtractively to zero one after the other, from right to left of the machine.

The total key 218 (Fig. 4), upon depression, is latched in operative position by the engagement of a hook end of the total key lever with a spring latch 223. In moving to operative position the total key lever will act to release the column latches 2I4 (Fig. 1) by engagement of said lever with a stud 263 fixed in the arm of a releasing bail 221, said bail being engaged with the latches and serving to move them out of position of engagement with the stop bars 6I5, thereby freeing the actuator segments from the control of said column latches.

The total key lever will also act to initiate a successive zeroizing of the numeral wheel as follows:

The key lever engages a cranked extension of a shaft 206, having fixed thereon an arm 229,

which arm engages a stud 350 fixed in a lever 35I fulcrumed at 352 upon a supporting arm 353. Arm 353 is pivotally mounted on a shaft 354. A rod or bail 355 is supported upon end plates fast on shaft 354. the right hand end plate 356 being normally supported by a toggle connection 351, one member of which is fixed on the frame of the machine at 358. Ball 355 extends beneath a series of latches, directly controlling the successive action above referred to.

Rocking movement of shaft 206, caused by depression of total key 218, will through arm 229 rock lever 35I and arm 353 in clockwise direction, as viewed in Fig. 4, bringing a lower spur extension of arm 353 into contact with a projection 359 of one of the links of the toggle 351, breaking the toggle and permitting bail 355 to be moved downwardly under the influence of spring 360 into the position illustrated in Fig. 5.

The right hand latch 36I (Fig. 6) of the series of latches supported by bail 355 has link connection 362 with a member 363, freely rotatable upon shaft 354 and provided with an extension or tripping finger 364, adapted under the influence of spring 365, to disengage the segment latch 6I1 (Figs. 1 and 2) of the extreme right hand arm GIG. The pivot connection between members 36I and 362 lies below a plane intersecting the distal axes thereof, so that downward buckling of these parts is prevented only by bail 355. Therefore, upon release of latch 36I from the restraint of bail 355, tripping finger 364 will act to release said right hand actuator segment, which will be rotated by its spring 683, to rotate the related numeral wheel.

The above described movement of member 363 will also, through link connection 366. move a pair of inter-connected zero stops 361 (Fig. 2) to bring a shoulder 368 of one of said stops into the path of movement of a shouldered index member 451 of the related numeral wheel, this member contacting with shoulder 368 as the wheel comes into zero registering or clear pos:- tion. This. as hereinbefore stated, brings the extreme right hand type bar 6 into adjusted position, wherein the type at the printing line will represent the amount which has been subtracted from the right hand numeral wheel. The lowering of bail 355 does not immediately release the latches related to the higher order members 363, since these latches 369 (Figs. 1 and 2), with their links, form toggle connections normally holding the left hand or higher order members 363 in latched condition. That is to say, the pivot connections between latches 369 and link 310 he above a plane intersecting the distal axes thereof.

Each toggle 369, 310 is broken (releasing the related member 363 for operation by its spring 365) as the next right hand or lower order numeral wheel arrives at zero registering position. This is effected by contact of the index member 451 of the lower order wheel with a roller 31I, mounted on a dog 312, pivoted upon the zero stop 361, and engaging a shoulder of a push rod 313, pivotally connected to a tripping lever 314 and supported at its free end by engagement with a bracket 315 (Fig. 1). Tripping lever 314 is provided with a lug 316 overlying the adjacent left hand or higher order latch or toggle link 369, and adapted to break the toggle when roller 31I rides to the top of the shouldered index member 451, as shown in Fig. 2.

Thus, the segment latch of each actuator segment is tripped and the zero stop dropped into position to cooperate with the related numeral wheel as soon as the clearing action in the next lower order is completed, whereby time is saved over the successive tripping mechanisms of the prior art, wherein an interval of time corresponding to the maximum clearing movement of the numeral wheel was allowed in every case.

The member 363 at the extreme left hand end of the series is provided with pin and slot connection 311 (Fig. 2) with a lever 318, this lever overlying a shoulder of connecting rod I30 (Fig. 4), said rod having at its upper end pivotal connection with a lever I 3I operating a latch II2 normally restraining a spring operated clutch lever I06, fulcrumed in the machine frame at I01. The end of lever I06 normally engages and restrains the clutch pawl I03, and upon release of latch H2 and movement of lever 106 said pawl will be operated by its spring to engage the driving clutch member I04.

The motor operation of the machine thus initiated serves to effect the printing of the amount set up on the type bars 6, spring actuated printing hammer 1I5 being released from a restraining means for this purpose.

In the printing operation lever 3I6 (Fig. 4) is oscillated by means of link I08 from driven clutch plate I05, lever 3I6 being connected by link 328 and arm 321 with shaft 302. A plate 108 is fast on shaft 302, and has a free edge portion engaging a stud in an arm of the restoring bail 101, which normally lies in the path of movement of hammer 1I5. As shaft 302 is rocked by the operation connections above described, plate 108 will be rocked therewith, the free edge thereof moving to bring a cam portion of said edge opposite the stud of bail 101, to release said bail and allow it to be moved out of the path of hammer 1I5 by its spring. Movement of plate 108 will also bring a stud 109 of said plate into contact with a frame 104 (Figs. 1 and 4) upon which a series of tripping fingers 102 are mounted. Frame 104 being rocked by contact of stud 109, fingers 102 will be brought into contact with the hammer latches 18!, displacing the same and releasing the hammers for operation by their springs.

All 'of thisilprinting means is well known in the art, and illustrated in the patent hereinbefore referred to.

It will be seen that the toggle latches will prevent operation of the printing mechanism through the left hand member 363 until all of the numeral wheels of the actuator are returned to zero, and that if for any reason one or more of the wheels have not been returned to zero, no printing will occur. In other words, no total will be printed, unless it has been properly cleared from the numeral wheels and set up in the type.

As is also well known in the art, the motor operation will serve to rock th frame 6l8, reengage the latches 8|! therewith and restore the acuator segments to normal position.

Bail 355 is restored during this motor operation by means of a stud 319, fixed in the cam arm 318 fast to rock shaft 38L upon which the arm 3H3 is fixed. Stud 319 (Fig. 4) is thus brought, during the reciprocation of the parts, against a hook 388, fixed on one of the toggle links 351, whereby the toggle will be restored to supporting position and the bail 355 will be operated to restore th latches 38!, 359 to normal position.

At the end of the motor operation a finger of arm 321 will operate through click pawl 222 and release lever 228 to move latch 223 and release the total key 218, the latter thereupon returning to normal position under influence of its spring.

Toriir.. SimuZtaneous zeroz'zing In Figs. '1 and 8, the invention is shown as applied to a listing machine wherein the accumulators are provided with tens transfer mechanism (not shown) of the jump type, wherein the higher order numeral wheel is given a single step of movement as the next adjacent lower order wheel passes from 9 to or from 0 to 9 registering position. As is customary in machines of this type, the actuator segments move simultaneously to zeroize the numeral wheel during the taking of a total, this being accomplished by initiating a cycle of motor operation as soon as the machine has been set for subtraction and the zero stops have been thrown into active position. Since in these machines subtraction occurs during the first stroke of the reciprocatory segments, the wheels will be set to zero and the amounts transferred therefrom will be set up in the type before the printing mechanism is operated (this operation occurring approximately at mid cycles).

In Figs. 7 and 8 the parts of the machine with which the novel mechanism cooperates are designatcd by the same reference numerals as those embodied in Figs. 1-6, modified by the exponent where the structure has been changed.

As in the first described form of the invention, mechanism is provided which will whether all of the numeral wheels of the register from which the total is being taken have been returned to zero, and unless they have been so returned, the hammers US will not be released from the restraint of bail 181'.

In addition to setting the machine for subtractive operation, in well known manner, total key 218 (Fig. 7) will set the zero stops in active position, by means of a shoulder 38! of the key stem, which will be moved rearwardly when the indicate key is depressed, out of restraining position with relation to a spring tensioned arm 382. Arm 382 is rigidly mounted on a rock shaft 383 on which a bail 384 is also rigidly mounted. Ball 384 has pin and slot connection with a similar bail 385, mounted upon the framing at 388, these bails extending across all of the totalizer wheels. Rock shaft 383 is also provided with a fixed arm 381, connected by link 388 with a lever 389 fulcrumed upon the shaft I81 which also forms the fulcrum of the clutch control lever I88. Lever 389 is provided with a forward extension on which a roller 398 is'mounted, and upon depression of the total key 218, lever 389 will be operated to bring the roller 398 into contact with the periphery of cam plate 39i, secured to the driven clutch member I85.

In this position of the parts, roller 398 will hold the forward edges of bails 3840r 385 just clear of the disks 392 (see the upper accumulator 413 Fig. 8) of the numeral wheels of an accumulator which has been brought into mesh with the accumulator segments, but also in the paths of movement-of the zero index shoulders of said disks. In this position of the parts, bail 384 or 385 acts as a zero stop for the accumulator wheels.

Movement of lever 389 to bring roller 398 against the periphery of cam 391 serves to move a pin 393, fixed in said lever, into registration with notch 394 of the rearwardly extending arm of a latch 395, so that spring 398 will move said latch into engagement with a shoulder 391 of one of the end plates of restoring bail 181', so that while the parts are in this position hammers 1l5 will be restrained, and no total can be printed.

Total key 218' is also provided with a tripping finger 398, adapted as the key is depressed to trip latch I I2 and thereby effect engagement of the clutch, a cam extension of said finger thereafter operatingupon shaft 399 to release latch H2, which will thereupon fall on top of clutch control lever I88, ready for engagement therewith at the end of the cycle.

Frame 618' having been rocked to the low point of cam 3I8, allowing a full stroke of the actuator segments, the said frame will be held upon a dwell of cam 3l8 during a considerable portion of the mid cycle movement of shaft 38!. As frame M6 is thus brought to rest, a out way portion of cam 39! will be brought opposite the roller 398, allowing said roller to drop, in case the zero index notches 488 of disk 392 lie opposite the bail 384 or 385, which will occur only if all of the numeral wheels have been returned properly to zero registering position. This movement of roller 398 and lever 389 will move pin 393 to the opposite side of notch 394, lifting latch 395 away from the shoulder 391 of bail 181', and thus releasing the bail for movement out of restraining position with relation to the hammers as plate 188 arrives in releasing position. The printing will now occur as described with relation to the first form of the invention.

Printing having been effected, continued rotation of cam 35 will cam the roller 398 up to the high point of the cam, and hold the parts in their mid-way operated positions, .until key 218' is released from latch 223 and is restored by its spring, whereby shoulder 38I will move arm 382 into restrained position, moving pin 393, roller 398 and bails 384, 385 to their normal positions.

In both forms of the invention, failure of the machine to print a total will indicate that the machine is out of order, and should be serviced. Removal of the obstruction to zeroizing of the wheels will permit the completion of the zeroizing and total printing operations, with consequent unlocking of the total key and disengagement of any interlocks between such key and other operating keys of the machine, such as are customarily provided.

I claim:

1. In a listing adding machine having an accumulator comprising numeral wheels, actuator segments therefor, value printing means including hammers, and restraining means adapted to hold the printing hammers inactive; control means adapted to cooperate with the actuator segments to take a total from the accumulator, including total initiating elements and normally inactive zero stop means movable by said initiating elements to active position and operable to signify the clear or non-clear condition of said accumulator, and connections between the signifying and the restraining means adapted to maintain the restraining means in active position until the numeral wheels of said accumulator have all been restored to clear condition by the segments.

2. In a listing adding machine having an accumulator comprising numeral wheels provided with index members, spring impelled actuator segments therefor, a frame, and latches on said frame normally restraining said segments; conlator, including: zero stops adjustable into position of engagement with the index members of the accumulator, trains of elements each including an element movably mounted upon a zero stop and displaceable upon contact by the index member of the related numeral wheel as said member contacts its zero stop to trip the latch of the adjacent left hand actuator segment, and elements operable to trip the latch of the extreme right hand segment.

3. In a listing adding machine having an accumulator comprising numeral wheels provided with index members, spring impelled actuator segments therefor, a frame, and latches on said frame normally restraining said segments; control means adapted to cooperate withthe actuator segments to take a total from the accumulator, including: spring urged tripping fingers for said latches, spring urged zero stops individually adjustable into position of engagement with the index members of the accumulator, toggle bars normally holding said stops out of engaging position and said tripping fingers inactive, elements each operable as the index member of the related numeral wheel contacts its zero stop to break the toggle related to the adjacent left hand stop and finger, a bail normally supporting the toggle bars, and elements operable to release the bail.

IDRING PICKERING CROSMAN. 

